CN106363714A - Method for producing environment-friendly particle board through continuous hot pressing of total eucalypt wood leftover material - Google Patents
Method for producing environment-friendly particle board through continuous hot pressing of total eucalypt wood leftover material Download PDFInfo
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- CN106363714A CN106363714A CN201610746835.0A CN201610746835A CN106363714A CN 106363714 A CN106363714 A CN 106363714A CN 201610746835 A CN201610746835 A CN 201610746835A CN 106363714 A CN106363714 A CN 106363714A
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- wood shavings
- eucalyptus
- wood
- particieboard
- leftover pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/143—Orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/32—Modified amine-aldehyde condensates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B2037/1269—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a method for producing an environment-friendly particle board through continuous hot pressing of a total eucalypt wood leftover material. The method comprises the procedures like chipping, flaking, drying, two-time screening (veneer removing and grit removing), sorting and polishing, mixing glue, hot press molding, aftertreatment, sanding and board selecting. According to the method, the eucalypt wood leftover material is fully utilized, and the wood waste is reduced; the produced particle board reaches the national standard and meets the GB/T4897-2015 requirement in Particle Board and the GB18570-2001 requirement in Indoor Decorating and Refurbishing Materials Limit of Formaldehyde Emission of Wood-based Panels and Finishing Products; melamine impregnated paper can be pasted on the surface of a produced panel; and the particle board is manufactured into high-end desk panels, wardrobe and cabinet panels, partitions, wood floors, ceilings, and other panels.
Description
Technical field
The invention belongs to wood-based plate manufactures field, particularly one kind produces environmental protection plane using full Eucalyptus leftover pieces continuous hot-press
The method of card.
Background technology
Particieboard is wood-based plate one kind therein, particieboard (particle board), also known as flakeboard, particle board,
Grain plate, wood wool board etc., are to make wood shavings (particle) with timber or other lignocellulose for stock, apply after adhesive
The wood-based plate composing under temperature and pressure effect.Because particieboard structure ratio is more uniform, good processability can be as needed
It is processed into the sheet material of large format, is widely used in the fields such as furniture, office, timber floor and interior decoration, apply also for building
Industry and train, automobile bodies manufacture.
The raw material making particieboard includes wood particulate or lignocellulosic material, adhesive and additive, wood particulate or
Lignocellulosic material accounts for the 90% about of sheet material dry weight, and adhesive and additive account for 10% about;Taking between forest zone wood particulate more
Cut down material, small dimension wood (diameter is generally below 8 centimetres), logging residue and wood machining residues etc..Wood particulate includes into
Lamellar, strip, needle-like, granular wood chip, wood shavings, wood wool, sawdust etc.;In addition, non-wooden material's such as plant haulm, seed hulls skin
May be made as sheet material, it names often titled with material therefor name, such as Masson Pine particieboard, bagasse (wood shavings) plate, phragmites communiss plate, hemp stalk are broken
Grain plate etc..The multiplex urea-formaldehyde resin adhesive of adhesive and phenolic resin glue, the former fat color is light, and solidification temperature is low, to various plant materials
As the particieboards such as straw, rice husk have good adhesion effect, hot pressing temperature is 160~240 DEG C.Widely used aborning, but
Have the shortcomings that to discharge free formaldehyde high pollution environment.
Shaving shape is the deciding factor of board quality, therefore first has to produce qualified wood shavings.Timber is processed
The wood shavings of middle residue can be used as the sandwich layer of particieboard through reprocessing.Top layer wood shavings are mainly with the residue in felling or processing (such as
Wood flour etc.) and the processing of special grinding apparatus produce.The length of wood shavings, thickness, wide size because of production method and are used for making sandwich layer or top layer
Deng and different.The process equipment preparing wood shavings has the equipment such as wood chipping equipment, ring flaker, desintegrator, polisher, and cutting way is cut
Cut, cut off and slicing, broken etc..Want to obtain high-quality wood shavings, need to be through cutting, slicing, screening, polishing and the process such as broken again.
Manufactured goods particieboard does not need reworking, can directly use, and sound-absorbing and sound insulation value are also fine.But it also has
Its intrinsic shortcoming, because edge roughness, easy moisture absorption, so just seem especially heavy with particle boards to manufacturing edge sealing of furniture technique
Will.Larger additionally, due to particieboard volume, use its Hepplewhite, for other sheet materials, also heavier.
In recent years, the Guangdong and Guangxi Provinces of south China, Yunnan, Fujian, Guizhou, Hainan etc. save to start to introduce a fine variety and are trained by Guangxi state-owned forest farms
Educate the fast-growing Eucalyptuss kind with Guangdong, fast-growing Eucalyptus is a kind of leaf wood of light color, wood grain is tight and irregular, and sapwood layer compares
Width, in white to pale pink;The light brown red that core has.Fast-growing eucalyptus globuluss fast growth, can become a useful person, hill farmer is a large amount of for 3 years at present
Plantation, has accounted for south and can utilize more than the 50% of timber, added the such as arboreal growth such as pinaster, Cunninghamia lanceolata (Lamb.) Hook., margosa of original seeds relatively
Slowly, it is no longer able to haggle as wildwood and cuts down, and the timber yield of 1 mu of fast-growing eucalyptus globulus is equivalent to more than 5 mu of wildwood yield,
Eucalyptuss only account for the 13.7% of forest in Guangxi area, but solve Guangxi more than 80%, the timber demand in the whole nation more than 20%.
So fast-growing eucalyptus globuluss sheet material manufacturing enterprise rapid emergence, its production method be Eucalyptuss are cut down after be peeled into plate, do
With adhesive, plate is bonded into multi-layer sheet again after dry, this multi-layer sheet is also referred to as solid wood plywood, can use as the office of high-quality
The multiple uses such as product, timber floor, furniture and building-supporting plate, but substantial amounts of corner timber can be produced in multiple-plate production,
Either in cut-out, rotary-cut or adhesion process, all many leftover pieces can be produced, these multi-layer sheet factories, the leftover pieces initial stage is only
Can burn as fuel, cause the great wasting of resources.
Chinese patent discloses the method that some adopt culled wood to be raw material production particieboard, for example:
1st, application number: 200710065965.9, denomination of invention: a kind of particieboard, it is to be related to one kind to reclaim disposable chopsticks
Son is the particieboard of raw material production, belongs to composite wooden material technical field.Wood shavings board raw material is: the throwaway chopsticks 1- of recovery
100%th, convenient source 0-99%.The particieboard of the present invention is using conventional production technology preparation, particularly as follows: the disposable chopsticks reclaimed
Son be processed into after washing wood shavings, again the operation such as drying, applying glue, hot pressing obtain.
2nd, application number: 201310016324.x, denomination of invention: method for making particle board;It is by from wood materials
Granule forms slab, when then this slab is carried out with compacting manufacture particieboard, by using low-gravity wood materials and with slab
The high compression ratio of thickness and hair plates thickness is suppressed, and can be obtained lightweight at low cost and have splendid intensity, chi
Very little stability and the particieboard of surface characteristic.
3rd, application number: 201010265173.8;Denomination of invention: particieboard, disclose a kind of orientation for structure application
Structural particleboard and its manufacture method, including: the long stock that length-width ratio is more than 2, this strand is derived from the shell of Elaeis guineensis Jacq. leaveves section, and this section is
Harvest the by-product being formed during oil palm tree fruit, therefore section chief is about limited to 1 meter, this strand is from the cutting of the housing region of Elaeis guineensis Jacq. leaveves
Out, the outside in the and at least main face of this oriented structure chipboard.
Particieboard disclosed in above-mentioned document is disclosed and is pressed into using throwaway chopsticks, oil palm tree and low-gravity wood materials
The method of particieboard, but have no that the corner timber using fast-growing eucalyptus globuluss production process of plate is that raw material production full Eucalyptus leftover pieces dig
The report of card.
And, in existing particieboard production process, mostly adopt leftover pieces, due to doped with more bark, performance with
Reel difference is larger, if by its hot pressing together, the particieboard produced each position soft or hard can be led to differ, and absorb water journey
Degree, intensity also differ (bark is softer, and reel is harder), so the board quality produced is difficult to ensure that, and set at present
The removal of skin is a technical barrier being not easily solved.
Content of the invention
It is an object of the invention to provide a kind of corner timber of employing fast-growing eucalyptus globuluss production process of plate produces for raw material hot pressing
The method of full Eucalyptus leftover pieces particieboard.
The technical scheme is that and be achieved in that:
Comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmental protection particieboard:
(1) raw material rough segmentation
By produce Eucalyptus plywood leftover pieces and cut-out material, Eucalyptus small stems through first separation metal and stone, chip, letter
Single screen after deliver to wood chip and deposit transitional storehouse and stored, then chipper is delivered to by spiral conveyer and carries out slicing, then
Deliver in wet wood shavings material transitional storehouse through scratch board conveyor and stored;The moisture content of wet wood shavings should be maintained at less than 45%;Described point
Adopt magnetic separator from metal.
(2) it is dried
Wet wood shavings are delivered in roller drier through scratch board conveyor and are dried by high-temperature flue gas, make the whole moisture content of wood shavings
In 1.5-2.5%, now in dried material, bark and wood shavings are mixed in together.
(3) screening is debarked for the first time
The later wood shavings of drying are adopted the rocking sieve difference by screen mesh size of three rectangles, former using bark fiber easy to knot groups
Reason sorting, the wood shavings through upper strata screen cloth enter the rocking sieve sorting of next stage as acceptable material, and the bark of upper strata conglomeration is direct
Waste discharge uses for being polished into top layer material it is also possible to proceed to production line as the fuel of energy centre.
(4) second screening separates table, sandwich layer wood shavings and little sandstone
The qualified wood shavings of rocking sieve for rectangle sorting were entered the difference of three three layers rocking sieve utilization different layers screen mesh size, will dig
Flower is separated into top layer wood shavings (fines), sandwich layer wood shavings (qualified material), excessive wood shavings (being polished into top layer material), is delivered to table, sandwich layer
Winnower sorting sandstone, Fructus Anisi Stellati.
(5) polishing sorting
Sieve for the first time detached bark and sieve detached excessive wood shavings for the second time and be polished into top layer material through polisher, pass through
Winnower separation sandstone, excessive material, feeding top layer dry wood shavings storehouse is standby, and qualified material is through sandwich layer winnower separation sandstone and mistake
After Fructus Anisi Stellati, send into sandwich layer dry wood shavings storehouse standby.
(6) adjust glue mixing
The qualified dry wood shavings of watch core layer transport through transporter, deliver to glue mixer, impregnation workshop section simultaneously after the metering of chip metering feed bin
After glue required by technique and other chemical industry adjuvant are passed through to measure, to glue mixer, wood shavings and glue are in watch core layer glue mixer for pump
Being sufficiently stirred under, reach the uniform effect mixing abundant applying glue, wood shavings particle or Eucalyptus Fibers material account for the 85- of sheet material dry weight
90%, adhesive accounts for 10-15%.
(7) mat formation molding, pre- hot pressing
Wood shavings after applying glue deliver to mechanical classification diamond roller spreading machine through belt conveyer, are spread out all by mechanical classification unit of mating formation
Even smooth slab, by certain pressure, makes slab compression forming have conveying some strength;
Shaping slab, in continuous hot press, is pressed into plate by temperature, pressure and hot pressing time.
(8) treatment and finishing section
Dieplate arrives corresponding size through briar and deburring saw sawing, after cooling plate rack turnover panel is lowered the temperature, with fork truck by stacking
Good sheet material fork is put into semi-finished product storehouse and carries out the process of 68-80 hour equilibrium moisture content.
(9) sanding workshop section, the particieboard of cooled stacking is sent to sanding production line and carries out sanding, sawing, and sand goes to surface
Pre-hardening thickness, is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline sheet material of sanding crosses sorting through equipment, according to finished appearance and inherent physical property
Difference, is classified into different brackets sheet material on request;
(11) veneer, pastes melamine impregnated paper, woodgrained paper or metal film, packaging and warehouse-in according to user's request on surface.
Leftover pieces described in step (1) are that rotary-cut Eucalyptus plate produces unavailable waste material during plywood;Described
Cut-out material be Eucalyptus fell or rotary-cut processing in residue, such as timber butt, edges of boards;Described Eucalyptus small stems is Eucalyptus
Felling process cannot function as the short and small branch of timber.
In described step (7) hot pressing making sheet, hot press Temperature Distribution from high to low: thermal treatment zone first stage 230-245
℃;Second stage 220-240 DEG C;Second stage 210-230 DEG C;Final stage 190-220 DEG C;The heat that described hot press uses
Medium is conduction oil.
Heat absorption wind apparatus are arranged at described hot press top, and the warm-air pipe of heat absorption wind apparatus is sent heat back to hot-air drier and done
Dampness wood shavings.
Method using full Eucalyptus leftover pieces continuous hot-press production environmental protection particieboard of the present invention can be used as manufacture
High-grade desktop, wardrobe cupboard board, dividing plate, the substrate material of timber floor, furniture and office appliance plate.
The above-described method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press, the adhesive being used
Using composite urea formaldehyde resin, the parts by weight of wherein each raw material are:
50~100 parts of cyanurotriamide modified urea resin;
1~3 part of polyvinyl alcohol;
100~200 parts of clear water.
The production method of described composite urea formaldehyde resin is by by weight: first clear water is put in reactor, is heated to
80-100 DEG C, stir 10 minutes to 30 minutes, add polyvinyl alcohol and be allowed to dissolve, add melamine modified urea-formaldehyde tree
Fat, keeps 80-90 DEG C of stirring reaction 2-5 hour, and 10-20 minute adds and stirs and can use before use.
Described composite urea formaldehyde resin can add anti-blushing agent or fire retardant further it is also possible to add filler as needed,
Filler is starch.
Described composite urea formaldehyde resin adhesive, the function of each raw material is as follows:
Cyanurotriamide modified urea resin, is adhesive major ingredient.Urea-formaldehyde resin adhesive is a kind of thermosetting polymer adhesive.
Due to its process is simple, raw material is cheap, and adhesive strength is high, the advantages of water white transparency, be widely used in plywood, particieboard,
The industries such as medium density fibre board (MDF), the production of artificial board and interior decoration, can buy in Market of Adhesives.
Domestic at present have: Hebei province pays Langfang City Dacheng County village Xinghua construction material auxiliary reagent factory production.French, German,
Also there is production in Japan, Northern Europe.
Polyvinyl alcohol is toughener, is that one kind is commonly in chemical products, adds it so that the strength of shaving boards produced
Increase.
The invention has the advantage that
1st, adopt Eucalyptus leftover pieces continuous hot-press to produce environmental protection particieboard, because Eucalyptus is a kind of fast growing wood, be peeled into after felling
Plate is bonded into multi-layer solid wood plywood with adhesive after being dried by sheet of veneer again, can be used as the office appliance of high-quality, wood ground
The multiple uses such as plate, furniture and building-supporting plate, but either in cut-out, rotary-cut or bonded in multiple-plate production process
Journey, all can produce many particles, leftover pieces, these multi-layer sheet factories, and this kind of raw material initial stage burns only as fuel, causes
The great wasting of resources, leftover pieces are used by the present invention, are a kind of to make full use of resource, save the direction of timber.
From the point of view of the Guigang of Guangxi Zhuang Autonomous Region, there are thousands of plywood factories the whole city, the Eucalyptus aboundresources such as broken veneer,
The present invention adopts full Eucalyptus leftover pieces extrusion chipboard, and primary raw material is broken veneer (accounting for 60%), secondly be Eucalyptus wood butt,
Wooden bran etc. (accounts for 40%).
2nd, the present invention produces the technique having uniqueness, and one is using Eucalyptus leftover pieces;Two is using bark fiber easy to knot groups
Principle sorts, and sub-elects bark through rocking sieve;Three is that heat absorption wind apparatus are arranged at hot press top, and the warm-air pipe of heat absorption wind apparatus will
Heat is sent hot-air drier back to and wet wood shavings is dried.
3rd, modified urea-formaldehyde resin is adopted according to the characteristic of environmental protection particieboard, this adhesive possesses raw material inexpensively, processing technology
Easy to operate, produce the advantages of glue adhesive strength height, water white transparency, and the release of low formaldehyde gases, it is a kind of environmental type
Resin.
4th, the sheet material that the inventive method manufacture obtains can paste melamine impregnated paper on surface, the high-grade desktop of manufacture,
The sheet materials such as wardrobe cupboard board, dividing plate, timber floor, ceiling.Described adhesive can add anti-blushing agent or fire retardant further.Produce
Product are more widely applied.
5th, the standard that sheet material reaches, the particieboard that said method produces is up to state standards " particieboard " gb/t4897-
2015 require and " burst size of methanal in indoor decorating and refurnishing materials wood-based plate and its product " gb18570-2001 requirement.
Specific embodiment
Embodiment 1
Comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmental protection particieboard:
(1) raw material rough segmentation
By produce Eucalyptus plywood leftover pieces and cut-out material, Eucalyptus small stems through first separation metal and stone, chip, letter
Single screen after deliver to wood chip and deposit transitional storehouse and stored, then chipper is delivered to by spiral conveyer and carries out slicing, then
Deliver in wet wood shavings material transitional storehouse through scratch board conveyor and stored;The moisture content of wet wood shavings should be maintained at less than 45%;
Described leftover pieces are that rotary-cut Eucalyptus plate produces unavailable waste material during plywood;Described cut-out material is eucalyptus globuluss
Residue in wood felling or rotary-cut processing, such as timber butt, edges of boards;Described Eucalyptus small stems is that Eucalyptus felling process can not
Short and small branch as timber.
(2) it is dried
Wet wood shavings are delivered in roller drier through scratch board conveyor and are dried by high-temperature flue gas, or by hot press top
The warm-air pipe of heat absorption wind apparatus is sent heat back to hot-air drier and wet wood shavings is dried, and the whole moisture content making wood shavings is in 1.5-2.5%
Interior, now in dried material, bark and wood shavings are mixed in together;
(3) screening is debarked for the first time
The later wood shavings of drying are adopted the rocking sieve difference by screen mesh size of three rectangles, former using bark fiber easy to knot groups
Reason sorting, the wood shavings through upper strata screen cloth enter the rocking sieve sorting of next stage as acceptable material, and the bark of upper strata conglomeration is direct
Waste discharge uses for being polished into top layer material it is also possible to proceed to production line as the fuel of energy centre;
(4) second screening separates table, sandwich layer wood shavings
The qualified wood shavings of rocking sieve for rectangle sorting were entered the difference of three three layers rocking sieve utilization different layers screen mesh size, will dig
Flower is separated into top layer wood shavings (fines), sandwich layer wood shavings (qualified material), excessive wood shavings (being polished into top layer material), is delivered to table, sandwich layer
Winnower sorting sandstone, Fructus Anisi Stellati (traditional particieboard produces only has this screening sorting process);
(5) polishing sorting
Sieve for the first time detached bark and sieve detached excessive wood shavings for the second time and be polished into top layer material through polisher, pass through
Winnower separation sandstone, excessive material, feeding top layer dry wood shavings storehouse is standby, and qualified material is through sandwich layer winnower separation sandstone and mistake
After Fructus Anisi Stellati, send into sandwich layer dry wood shavings storehouse standby;
(6) adjust glue mixing
The qualified dry wood shavings of watch core layer transport through transporter, deliver to glue mixer, impregnation workshop section simultaneously after the metering of chip metering feed bin
After glue required by technique and other chemical industry adjuvant are passed through to measure, to glue mixer, wood shavings and glue are in watch core layer glue mixer for pump
Being sufficiently stirred under, reach the uniform effect mixing abundant applying glue, wood shavings particle or Eucalyptus Fibers material account for the 85- of sheet material dry weight
90%, adhesive accounts for 10-15%;
The adhesive being used adopts composite urea formaldehyde resin, and the parts by weight of wherein each raw material are:
50 parts of cyanurotriamide modified urea resin;
1 part of polyvinyl alcohol;
100 parts of clear water.
The production method of described composite urea formaldehyde resin is by according to parts by weight, first clear water is put in reactor, plus
Heat, to 80 DEG C, stirs 30 minutes, adds polyvinyl alcohol and be allowed to dissolve, and adds cyanurotriamide modified urea resin, keeps 80
DEG C stirring reaction 5 hours, before use 10-20 minute add and stir and can use.It is additionally added starch, face in the present embodiment
Powder filler, adds the 10-20% for adhesive weight for the weight of filler.Composite urea formaldehyde resin can add anti-blushing agent further.
(7) mat formation molding, pre- hot pressing
Wood shavings after applying glue deliver to mechanical classification diamond roller spreading machine through belt conveyer, are spread out all by mechanical classification unit of mating formation
Even smooth slab, by certain pressure, makes slab compression forming have conveying some strength;
Shaping slab, in continuous hot press, is pressed into plate by temperature, pressure and hot pressing time.In hot pressing making sheet, hot press
Temperature Distribution is from high to low: 230-245 DEG C of thermal treatment zone first stage;Second stage 220-240 DEG C;Second stage 210-230 DEG C;
Final stage 190-220 DEG C;The thermal medium that described hot press uses is conduction oil.Heat absorption wind dress is arranged at described hot press top
Put, heat is sent back to hot-air drier wet wood shavings are dried.
(8) treatment and finishing section
Dieplate arrives corresponding size through briar and deburring saw sawing, after cooling plate rack turnover panel is lowered the temperature, with fork truck by stacking
Good sheet material fork is put into semi-finished product storehouse and carries out equilibrium moisture content process in 72 hours.
(9) sanding workshop section, the particieboard of cooled stacking is sent to sanding production line and carries out sanding, sawing, and sand goes to surface
Pre-hardening thickness, is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline sheet material of sanding crosses sorting through equipment, according to finished appearance and inherent physical property
Difference, is classified into different brackets sheet material on request, is packed and puts in storage.
Above-described embodiment produce particieboard be up to state standards " particieboard " gb/t4897-2015 require and " indoor dress
Burst size of methanal in decorations finishing material wood-based plate and its product " gb18570-2001 requirement, produce sheet material and can paste three on surface
Poly cyanamid impregnates paper, manufactures the sheet materials such as high-grade desktop, wardrobe cupboard board, dividing plate, timber floor, ceiling.
Embodiment 2
Comprised the following steps that using the method that full Eucalyptus leftover pieces continuous hot-press produces environmental protection particieboard:
(1) raw material rough segmentation
By produce Eucalyptus plywood leftover pieces and cut-out material, Eucalyptus small stems through first separation metal and stone, chip, letter
Single screen after deliver to wood chip and deposit transitional storehouse and stored, then chipper is delivered to by spiral conveyer and carries out slicing, then
Deliver in wet wood shavings feed bin through scratch board conveyor and carry out transition storage;The moisture content of wet wood shavings should be maintained at less than 45%;
Described leftover pieces are that rotary-cut Eucalyptus plate produces unavailable waste material during plywood;Described cut-out material is eucalyptus globuluss
Residue in wood felling or rotary-cut processing, such as timber butt, edges of boards;Described Eucalyptus small stems is that Eucalyptus felling process can not
Short and small branch as timber.
(2) it is dried
Wet wood shavings are delivered in roller drier through scratch board conveyor and are dried by high-temperature flue gas, make the whole moisture content of wood shavings
In 1.5-2.5%, now in dried material, bark and wood shavings are mixed in together;
(3) screening is debarked for the first time
The later wood shavings of drying are adopted the rocking sieve difference by screen mesh size of three rectangles, former using bark fiber easy to knot groups
Reason sorting, the wood shavings through upper strata screen cloth enter the rocking sieve sorting of next stage as acceptable material, and the bark of upper strata conglomeration is direct
Waste discharge uses for being polished into top layer material it is also possible to proceed to production line as the fuel of energy centre;
(4) second screening separates table, sandwich layer wood shavings
The qualified wood shavings of rocking sieve for rectangle sorting were entered the difference of three three layers rocking sieve utilization different layers screen mesh size, will dig
Flower is separated into top layer wood shavings (fines), sandwich layer wood shavings (qualified material), excessive wood shavings (being polished into top layer material), is delivered to table, sandwich layer
Winnower sorting sandstone, Fructus Anisi Stellati (traditional particieboard produces only has this screening sorting process);
(5) polishing sorting
Sieve for the first time detached bark and sieve detached excessive wood shavings for the second time and be polished into top layer material through polisher, pass through
Winnower separation sandstone, excessive material, feeding top layer dry wood shavings storehouse is standby, and qualified material is through sandwich layer winnower separation sandstone and mistake
After Fructus Anisi Stellati, send into sandwich layer dry wood shavings storehouse standby;
(6) adjust glue mixing
The qualified dry wood shavings of watch core layer transport through transporter, deliver to glue mixer, impregnation workshop section simultaneously after the metering of chip metering feed bin
After glue required by technique and other chemical industry adjuvant are passed through to measure, to glue mixer, wood shavings and glue are in watch core layer glue mixer for pump
Being sufficiently stirred under, reach the uniform effect mixing abundant applying glue, wood shavings particle or Eucalyptus Fibers material account for the 85- of sheet material dry weight
90%, adhesive accounts for 10-15%;
The adhesive being used adopts composite urea formaldehyde resin, and the parts by weight of wherein each raw material are:
100 parts of cyanurotriamide modified urea resin;
3 parts of polyvinyl alcohol;
200 parts of clear water.
The production method of described composite urea formaldehyde resin is by according to parts by weight, first clear water is put in reactor, plus
Heat, to 100 DEG C, stirs 10 minutes, adds polyvinyl alcohol and be allowed to dissolve, and adds cyanurotriamide modified urea resin, keeps 90
DEG C stirring reaction 2 hours, before use 10-20 minute add and stir and can use.Be additionally added in the present embodiment tapioca starch,
Flour filler, adds the 10-20% for adhesive weight for the weight of filler.Cyanurotriamide modified urea resin adhesive at home
Market is bought;Composite urea formaldehyde resin can add fire retardant further.
(7) mat formation molding, pre- hot pressing
Wood shavings after applying glue deliver to mechanical classification diamond roller spreading machine through belt conveyer, are spread out all by mechanical classification unit of mating formation
Even smooth slab, by certain pressure, makes slab compression forming have conveying some strength;
Shaping slab, in continuous hot press, is pressed into plate by temperature, pressure and hot pressing time.In hot pressing making sheet, hot press
Temperature Distribution is from high to low: 230-245 DEG C of thermal treatment zone first stage;Second stage 220-240 DEG C;Second stage 210-230 DEG C;
Final stage 190-220 DEG C;The thermal medium that described hot press uses is conduction oil.Heat absorption wind dress is arranged at described hot press top
Put, heat is sent back to hot-air drier wet wood shavings are dried.
(8) treatment and finishing section
Dieplate arrives corresponding size through briar and deburring saw sawing, after cooling plate rack turnover panel is lowered the temperature, with fork truck by stacking
Good sheet material fork is put into semi-finished product storehouse and carries out equilibrium moisture content process in 72 hours.
(9) sanding workshop section, the particieboard of cooled stacking is sent to sanding production line and carries out sanding, sawing, and sand goes to surface
Pre-hardening thickness, is sawed into standard breadth (or customer requirement) production board.
(10) Xuan Ban workshop section, the offline sheet material of sanding crosses sorting through equipment, according to finished appearance and inherent physical property
Difference, is classified into different brackets sheet material on request, is packed and puts in storage.
Above-described embodiment produce particieboard be up to state standards " particieboard " gb/t4897-2015 require and " indoor dress
Burst size of methanal in decorations finishing material wood-based plate and its product " gb18570-2001 requirement, produce sheet material and can paste three on surface
Poly cyanamid impregnates paper, manufactures the sheet materials such as high-grade desktop, wardrobe cupboard board, dividing plate, timber floor, ceiling.
Claims (8)
1. adopt full Eucalyptus leftover pieces continuous hot-press to produce the method for environmental protection particieboard it is characterised in that including following technique step
Rapid:
(1) raw material rough segmentation
By produce Eucalyptus plywood leftover pieces and cut-out material, Eucalyptus small stems through first separation metal and stone, chip, letter
Single screen after deliver to wood chip and deposit transitional storehouse and stored, then chipper is delivered to by spiral conveyer and carries out slicing, then
Deliver in wet wood shavings transition feed bin through scratch board conveyor and stored;The moisture content of wet wood shavings should be maintained at less than 45%;Note storing up
The process of depositing can not be oversize, it is to avoid wet wood shavings are mouldy and overheated;
The described metal that separates adopts magnetic separator;
(2) it is dried
Wet wood shavings are delivered to hot-air drier through scratch board conveyor and are dried, the whole moisture content making wood shavings in 1.5-2.5%, this
When dried material in bark and wood shavings mixed in together;
(3) screening is debarked for the first time
Wood shavings later for drying are adopted the rocking sieve difference by screen mesh size of more than two-layer or two-layer, easy using bark fiber
Conglomeration principle sorts, and the wood shavings through upper strata screen cloth enter the rocking sieve sorting of next stage, the tree of upper strata conglomeration as acceptable material
The direct waste discharge of skin is as the fuel of energy centre, or proceeds to production line for being polished into top layer material use;
(4) second screening separates table, sandwich layer wood shavings and little sandstone
The difference by rocking sieve utilization different layers screen mesh size for the qualified wood shavings that vibrating screen is sorted, wood shavings are separated into top layer plane
Flower fines, the qualified material of sandwich layer wood shavings, excessive wood shavings, are polished into top layer material, are delivered to table, sandwich layer winnower sub-elects sandstone and big
Material;
(5) polishing sorting
Sieve for the first time detached bark and sieve detached excessive wood shavings for the second time and be polished into top layer material through polisher, pass through
Winnower separation sandstone, excessive material, feeding top layer dry wood shavings storehouse is standby, and qualified material is through sandwich layer winnower separation sandstone and mistake
After Fructus Anisi Stellati, send into sandwich layer dry wood shavings storehouse standby;
(6) adjust glue mixing
The qualified dry wood shavings of watch core layer transport through transporter, deliver to glue mixer, impregnation workshop section simultaneously after the metering of chip metering feed bin
After glue required by technique and other chemical industry adjuvant are passed through to measure, to glue mixer, wood shavings and glue are in watch core layer glue mixer for pump
Being sufficiently stirred under, reach the uniform effect mixing abundant applying glue, wood shavings particle or Eucalyptus Fibers material account for sheet material dry weight
85-90%, adhesive accounts for 10-15%;Described adhesive adopts composite urea formaldehyde resin;
(7) mat formation molding, pre- hot pressing
Wood shavings after applying glue deliver to mechanical classification diamond roller spreading machine through belt conveyer, are spread out all by mechanical classification unit of mating formation
Even smooth slab, by certain pressure, makes slab compression forming have conveying some strength;
Shaping slab, in continuous hot press, is pressed into plate by temperature, pressure and hot pressing time;
(8) treatment and finishing section
Dieplate arrives corresponding size through briar and deburring saw sawing, after cooling plate rack turnover panel is lowered the temperature, with fork truck by stacking
Good sheet material fork is put into semi-finished product storehouse to carry out standing 68-80 hour, and equilibrium moisture content is processed;
(9) sanding workshop section, the particieboard of cooled stacking is sent to sanding production line and carries out sanding, sawing, and sand goes to surface pre- solid
Change layer, be sawed into the production board of standard breadth or customer requirement;
(10) Xuan Ban workshop section, the offline sheet material of sanding crosses sorting through equipment, according to the difference of finished appearance and inherent physical property,
It is classified into different brackets sheet material on request;
(11) veneer, pastes melamine impregnated paper, woodgrained paper or metal film according to user's request in surface of chipboard.
2. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 1, its feature
It is: the leftover pieces described in step (1) are that rotary-cut Eucalyptus plate produces unavailable waste material during plywood;Described cuts
Fracture is the residue in Eucalyptus felling or rotary-cut processing, including timber butt, edges of boards;Described Eucalyptus small stems is that Eucalyptus is adopted
The process of cutting down cannot function as the short and small branch of timber.
3. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 1, its feature
Be: in described step (7) hot pressing making sheet, hot press Temperature Distribution from high to low: 230-245 DEG C of thermal treatment zone first stage;
Second stage 220-240 DEG C;Second stage 210-230 DEG C;Final stage 190-220 DEG C;Heat Jie that described hot press uses
Matter is conduction oil.
4. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 1, its feature
It is: heat absorption wind apparatus are arranged at described hot press top, the warm-air pipe of heat absorption wind apparatus is sent heat back to hot-air drier and is dried
Wet wood shavings.
5. described in claim 1 using full Eucalyptus leftover pieces continuous hot-press produce environmental protection particieboard method it is characterised in that:
Described particieboard is as the base material manufacturing high-grade desktop, wardrobe cupboard board, dividing plate, timber floor, furniture and office appliance plate
Raw material.
6. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 1, its feature
It is: the parts by weight of each raw material of described composite urea formaldehyde resin are:
50~100 parts of cyanurotriamide modified urea resin;
1~3 part of polyvinyl alcohol;
100~200 parts of clear water.
7. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 6, its feature
It is: the production method of described composite urea formaldehyde resin is according to parts by weight, first clear water is put in reactor, is heated to
80-100 DEG C, stir 10 minutes to 30 minutes, add polyvinyl alcohol and be allowed to dissolve, add melamine modified urea-formaldehyde tree
Fat, keeps 80-90 DEG C of stirring reaction 2-5 hour, and 10-20 minute adds and stirs and can use before use.
8. the method that environmental protection particieboard is produced using full Eucalyptus leftover pieces continuous hot-press according to claim 6, its feature
It is: described composite urea formaldehyde resin can add filler, anti-blushing agent or fire retardant further.
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